Drywall repair: patch or replace, and what drives the cost

Most rooms we paint need some drywall work first. Nail pops, a doorknob hole behind a door, a crack running up from the corner of a window, anchor holes from an old TV mount, a brown ring on the ceiling from a leak.

Here’s what drives the cost of that work, how to tell whether a spot can be patched or needs to be cut out, what to do about water damage, and why we repaint the whole wall when we’re done.

What drives the cost

We price drywall repair by how much the room needs. Most rooms fall into one of three levels:

Level	What it usually looks like
Minor	Nail pops, small holes from pictures and anchors
Moderate	Several patches, cracks, a small water stain
Major	Big holes, long cracks, larger stains

Here’s what moves a room from one level to the next:

• Size of the damage. A nail hole is a quick fill. A doorknob hole needs a patch or a new piece of drywall behind the mud, then several coats with sanding between each one.
• How many spots. One hole is a small job. A wall full of anchor holes, cracks and dents takes a lot longer, even if each spot is small.
• Water stains. A stain means checking the board, sealing it with stain-blocking primer, and sometimes cutting a section out. More on that below.
• Patch or replace. Cutting out bad board and hanging a new piece takes more work than a patch, since the seams get taped and finished like new work.
• Texture. A smooth wall needs the patch feathered out wide and sanded flat. Orange peel, knockdown and hand textures have to be matched on the patch.
• Room size. Bigger rooms scale up from there.
• Whether the wall gets painted after. It almost always should. A repaired wall needs paint anyway, so drywall repair usually goes along with painting the room, and the paint level you pick is part of the price.

We look at the damage in person at the free estimate, and you get a written price before we start. See how we price.

When a patch is enough

Most damage is patch work. The drywall around it is solid, dry and flat, and the job is to fill, tape and smooth the bad spot so it disappears under paint.

Small holes and nail pops

Nail and screw holes get filled with joint compound, sanded and primed. A nail pop (the little round bump where a nail has backed out of the stud) gets a screw driven in next to it to pull the board tight, then the old nail is set and the spot is mudded over.

Bigger holes

A doorknob hole or a hole from a moving accident needs something behind the mud. Depending on the size, that’s a mesh patch or a piece of new drywall cut to fit, then taped and mudded in several thin coats, sanded between each one.

Cracks

Cracks at the corners of doors and windows are common as a house settles and the seasons change. If you just smear mud in a crack, it tends to come right back. We open it up, tape it so the joint has something to hold it together, and feather the mud out wide so it doesn’t leave a ridge.

Torn paper

When wallpaper or tape gets pulled off, it can tear the paper face of the drywall. Mud right over torn paper bubbles. That spot gets sealed with a primer made for it first, then smoothed.

When a section has to be replaced

Sometimes the board itself is the problem. Then the bad piece gets cut out back to the framing, a new piece is screwed in, and the seams are taped and finished like new work.

It’s time to replace a section when:

• The drywall is soft, crumbly or swollen when you press on it.
• A ceiling is sagging after a leak.
• There is mold growing in the board, not just a stain on the surface.
• The damage is so big or so close together that patching would take longer and look worse than a clean new piece.

Water damage: fix the leak first

Water stains are the most common reason a room jumps from minor to moderate or major. They show up under upstairs bathrooms, around windows, near the water heater, and on ceilings below an attic air handler or a roof leak.

Before anyone patches or paints, go in this order.

1. Find and stop the water

Painting over a leak hides it for a while, then the stain comes back. A plumber, roofer or HVAC tech may need to fix the source first. That’s not work we do, but we can point out what we see.

2. Check the drywall

Press on the stained area. The EPA’s guidance is that drywall can sometimes be dried in place if it isn’t swollen and the seams are intact. If it’s soft, swollen, or the tape is coming loose, it needs to come out. The EPA also notes that wet materials should be dried within 24 to 48 hours to keep mold from growing.

3. Look for mold

If you see fuzzy or dark growth, or the area smells musty, take that seriously. The EPA says most people can handle a moldy area smaller than about 10 square feet themselves, and that bigger areas or a lot of water damage call for more careful cleanup. If it’s more than a small spot, have a mold professional deal with it before any patching or painting happens. Paint doesn’t fix mold.

4. Seal the stain

Once the area is dry and solid, the stain gets a coat of stain-blocking primer. Water stains bleed right through regular paint, even after two or three coats. The primer locks the stain in so the finish coat stays clean.

Matching the texture

A flat patch on a textured wall stands out from across the room, even with perfect paint over it.

• Smooth walls need the patch feathered out wide and sanded flat so it doesn’t show in light from a window.
• Orange peel and knockdown textures get matched on the patch before primer, blending the edges into the wall around it.
• Hand-applied textures vary from house to house. We’ll match as closely as the wall allows and tell you up front if a spot will be hard to hide.

If you have a popcorn ceiling with damage, it can often be patched, but it may be a good time to take it off. We can look at that at the same estimate.

Why we repaint the wall corner to corner

People often ask us to “just touch up the patch.” Here’s why that rarely works:

• Paint ages. Even the same color from the same store won’t match paint that has been on the wall for years.
• Patches take paint differently. Fresh mud and primer absorb paint differently than old painted drywall, so a touch-up shows as a dull or shiny spot. Painters call it flashing.
• Sheen shows everything. The shinier the paint, the more a touch-up stands out. Our guide to paint sheen room by room goes into this.

So we paint the whole wall, from one corner to the next, and usually the whole room so every wall matches. That’s what makes a repair invisible.

How a typical repair goes

1. Cover floors and furniture, and set up for dust.
2. Open up cracks and loose tape, and cut out any damaged board.
3. Fill, tape and mud in thin coats, letting each one dry.
4. Sand smooth and clean off the dust.
5. Match the texture.
6. Prime the repairs, with stain-blocking primer where there was water.
7. Paint the full wall, corner to corner.

Who calls us for this

Homeowners after a leak is fixed. Landlords turning over a rental in Spartanburg. Sellers getting a house in Mauldin ready to list, where buyers notice every dent; see getting ready to sell.

For the details on what we fix and how, visit our drywall repair page, or see interior painting for the rest of the room. To have us take a look, call or text 864-800-8275.